Krakatau volcano: eruption Oct 2018 - ash venting
Along with a small group, Tom Pfeiffer stayed on the island group during a Volcano Special tour from 13-19 Oct: the volcano's activity during this time fluctuated between phases of mild to strong ash venting along with occasional strombolian activity, as well as intermittent powerful vulcanian-type explosions. Ash emissions, both passive and accompanied by strombolian to vulcanian explosions were often continuous:

Very strong and ash-rich explosions occurred from the new summit crater of Anak Krakatau when we arr... [info]
(99 visti)
(99 visti)

Billowing ash plumes from this activity rose several hundred meters. (Photo: Tom Pfeiffer) [info]
(90 visti)
(90 visti)

The slopes of the summit cone were showered with small and large impacts of bombs. (Photo: Tom Pfeif... [info]
(81 visti)
(81 visti)

Another explosion occurred few minutes after the previous one. (Photo: Tom Pfeiffer) [info]
(85 visti)
(85 visti)

Ash plume rising near vertically for a few hundred meters. (Photo: Tom Pfeiffer) [info]
(73 visti)
(73 visti)

Ash venting is near continuous on the afternoon of 13 Oct. (Photo: Tom Pfeiffer) [info]
(61 visti)
(61 visti)

Strong southwesterly winds carry the ash towards the northeast. (Photo: Tom Pfeiffer) [info]
(71 visti)
(71 visti)

Phase of weak ash emissions. (Photo: Tom Pfeiffer) [info]
(120 visti)
(120 visti)

Continuous mild explosions and ash emissions from Anak Krakatau on 13 Oct 2018 afternoon. (Photo: To... [info]
(282 visti)
(282 visti)

Strombolian activity generates a vertical jet of material. (Photo: Tom Pfeiffer) [info]
(91 visti)
(91 visti)

Dense ash column rising from Anak Krakatau (Photo: Tom Pfeiffer) [info]
(69 visti)
(69 visti)

Strong ash emissions in the evening light. (Photo: Tom Pfeiffer) [info]
(79 visti)
(79 visti)

Ash plume from a small explosion on 14 Oct evening. (Photo: Tom Pfeiffer) [info]
(65 visti)
(65 visti)

View towards the summit crater from the edge of the forest on Anak Krakatau (Photo: Tom Pfeiffer) [info]
(56 visti)
(56 visti)

Dense ash plume from a moderately strong explosion seen from the edge of the forest on 14 Oct. (Phot... [info]
(64 visti)
(64 visti)

Ash plume at sunset (Photo: Tom Pfeiffer) [info]
(57 visti)
(57 visti)